EPIC if possible please optimize large texture caching or whatever it is that works so long to get big textures work, Open World collection takes 20+ minutes on i7 4770 & RX470 to work then after that it is fast and ok.
You probably need more ram. If I recall correctly, the kite demo project recommends something like 20-30gb of ram. If you don’t have enough ram, then it will have to use your pagefile on your hard drive.
The first initial load is long because the engine is building the shader cache (or whatever the name of it is). It’s expected.